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J. P. SILLIMAN 8v J'. A. MAXWELL.

} GAR WHEEL LUBRIGATOR.

N0. 297,021. Patented Apr. 15, 1884;

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nurse I STATES JAMES P. SILLIMAN AND JAMES A. MAXVELL, OF ALLEGHENY, PA.

CARQ-WHEEL LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 297,021, dated April 15, 1884.

Application filed January 24, 1884.

To a, whom it may concern Be it known that we, J AMES P. SILLIMAN and JAMES A. MAXWELL, citizens of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in the Means for Lubricating Pit- Car Wheels, of which the following is a specification, reference being had therein to the accompanying drawings.

Our invention relates to an imp'rovemeutiu the means for lubricating pit-car wheels to make an uninterrupted and even distribution of the lubricant, saving oil from waste and gaining easy access to the hubs to be cleaned when their interior parts have become filled with dirt; and it consists in an arrangement of parts hereinafter described.

The usual way of lubricating the axles of coal-pit cars that run loose on the axles is through channels in the hubs leading directly to the axles, around which are small chambers for the retention or retarding the distribution of the oil. During the revolution ofthe wheels the oil thus introduced runs longitudinally along the axle, is lost, and in a short time leaves the axle dry. Others have chambers for the oil between the spokes of the wheels, and from these, during a rapid revolution, the oil is poured on the axle with so much force as to cause its discharge from either end of the hub. After having been used a short time, all such chambers become clogged or filled by the remnants of the oil mixed with coal-dust, and, being fixtures with but small openings for the admission of oil, they cannot be cleaned out. Consequently such wheels become unfit for use.

The accompanying drawings represent our invention.

Figure 1 represents a vertical section of the axle, hub, and cap; Fig. 2, a transverse section of the cap A; Fig. 3, atransverse section of the chamber H.

A is a vertically-corrugated cap, provided with flanges B, attached by means of screws to projections 0, cast on the hub D near its forward end. In the center of the cap A is an aperture for the admission of a lubricant.

F is a gutter formed by the expanded end (No model.)

E of the hub D and the surrounding wall of the cap, and from it lead the channels G to a chamber, H. There are three of these channels distributed around the axle, and through them the oil is first led to the axle, and afterward, when the axle has been lubricated, the surplus oil is returned by the same channels to the cap A, to be redistributed in the same manner. The interior of the chamber H is corrugated like the cap A, for the purpose of carrying the oil without intermission around the axle, distributing it over its face and not allowing it to settle in any place. When theoil is poured into the cap A through the aperture J, it runs down into the lower part of the cap, and there remains stationary until the wheels are set in motion. The corrugated wall of the cap, as soon as the wheels begin to turn, lifts the oil, and, scattering in all directions, causesit to flow intothe gutter F, to be conveyed through the channels G into the chamber H. By this means the oil is constantly kept in motion as long as the wheels revolve, and forced to all parts it is required to lubricate. In case the hubs or the caps become clogged to need cleaning, the screws holding the caps are to be removed, the caps taken off, and access is gained for the removal of obstructions.

Having thus described our invention, we claim- 1. A corrugated cap affixed to projections on the hub, havinga central aperture for the introduction of a lubricant, substantially as described. g

2. In acorrugated cap affixed to projections on the hub, a gutter formed by the expanded forward end of the hub and the surrounding wall of the cap, substantially as described.

3. The combination of the cap A with gutter F and the channels G, leading to the corrugated chamber H in the hub, substantially as shown and described.

In testimony whereof we affix our signatures in presence of two witnesses.

JAMES P. SILLIMAN. JAMES A. MAXVELL.

\Vitnesses:

LoUIs Mon-sun, T. F. LEHMANN. 

